783.33% is the change from 66 to 583
Calculation steps:
[( 583 - 66 ) ÷ 66] x 100 = 783.33%
Formula
Percentage change = [(583 - 66) / 66] x 100
Subtract the new number by the original number
583 - 66 = 517
517 ÷ 66 = 7.833333333333333
7.833333333333333 x 100 = 783.33%